Re: [libvirt] [PATCH] Fix GCC hard-coding in python/

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"Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote:
> On Wed, Dec 17, 2008 at 09:57:23AM +0100, Jim Meyering wrote:
>> john.levon@xxxxxxx wrote:
>> > Fix GCC hard-coding in python/
>> ...
>> > diff --git a/acinclude.m4 b/acinclude.m4
>> > --- a/acinclude.m4
>> > +++ b/acinclude.m4
>> > @@ -75,6 +75,11 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
>> >
>> >      WARN_CFLAGS="$COMPILER_FLAGS $complCFLAGS"
>> >      AC_SUBST(WARN_CFLAGS)
>> > +
>> > +    COMPILER_FLAGS=
>> > +    gl_COMPILER_FLAGS(-Wno-redundant-decls)
>> > +    NO_RDECLS_CFLAGS=$COMPILER_FLAGS
>> > +    AC_SUBST(NO_RDECLS_CFLAGS)
>> >  ])
>> >
>> > diff --git a/python/Makefile.am b/python/Makefile.am
>> > --- a/python/Makefile.am
>> > +++ b/python/Makefile.am
>> > @@ -35,7 +35,7 @@ python_LTLIBRARIES = libvirtmod.la
>> >
>> >  libvirtmod_la_SOURCES = libvir.c types.c libvirt-py.c libvirt-py.h
>> >  # Python header files contain a redundant decl, hence:
>> > -libvirtmod_la_CFLAGS = -Wno-redundant-decls
>> > +libvirtmod_la_CFLAGS = @NO_RDECLS_CFLAGS@
>>
>> That -Wno-redundant-decls option is no longer necessary, at least
>> on rawhide.  When I remove it, compiling with "make -C python
>> CFLAGS='-Wredundant-decls -Werror'" still succeeds.
>
> What about with older RHEL-5 python though ? Python 2.4 had rather a large
> number of flaws in its public header file that have caused plenty of
> compile warning problems in past.

It's no trouble for me either way.

I find that it is a losing battle to try to enable aggressive
compiler warnings on older systems, but don't feel strongly
about this particular case.

I mentioned it because there are new gcc-warning-related macros in gnulib,
and it'd be slightly easier to use them if the ones libvirt uses don't
have tendrils reaching into relatively distant Makefile.am files.

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